Steinhauer (German for stonemason) is a surname. Notable people with the surname include:
Ernst Steinhauer (1925-2005), West German sprint canoerGustav Steinhauer (c. 1870–?), German spyHenry Bird Steinhauer (1804-1885), Canadian Methodist clergymanJohann Steinhauer (1705-1779), Latvian entrepreneur, social reformer and landownerLukas Steinhauer (born 1992), German professional ice hockey goaltenderNeal Steinhauer (born 1944), United States shotputterOlen Steinhauer (born 1972), United States novelistOrlondo Steinauer (born 1973), former Canadian football safetyRalph Steinhauer (1905-1987), Canadian politicianSherri Steinhauer (born 1962), United States golfer